Accutronics 8AB2D1A Reverb Tank New Production Accutronics 8AB2D1A Spring Reverb Tank Short (9 1/4") 3 Spring Unit, Medium Decay Input Impedance 10 Ohms, Output Impedance 2575 Ohms Mounting: Horizontal Open Side Up. Connectors: Input Insulated/Output Insulated Made In South Korea